USD394878SExpiredUtility

Arithmetic instructional apparatus

45
Assignee: PEREZ IRMA MARITZAPriority: Apr 21, 1997Filed: Apr 21, 1997Granted: Jun 2, 1998
Est. expiryApr 21, 2017(expired)· nominal 20-yr term from priority
Inventors:Irma Maritza Perez
45
PatentIndex Score
7
Cited by
16
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamemtal design for an arithmetic instructional apparatus, as shown and described.

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